Axel Lin 052eb2d490
spi: core: Set max_speed_hz of spi_device default to max_speed_hz of controller ...
In __spi_validate(), xfer->speed_hz is set to be spi->max_speed_hz if it is not
set for this transfer. However, if spi->max_speed_hz is also not set,
xfer->speed_hz is 0. Some drivers (e.g. au1550, tegra114, tegra20-sflash,
tegra20-slink, etc.) then use below code to avoid setting xfer->speed_hz to 0.
/* Set speed to the spi max fequency if spi device has not set */
spi->max_speed_hz = spi->max_speed_hz ? : tspi->spi_max_frequency;
Let's handle it in spi core.
If spi->max_speed_hz is not set, make it default to spi->master->max_speed_hz.
So In __spi_validate() if both xfer->speed_hz and spi->max_speed_hz are not set,
xfer->speed_hz will be set to spi->master->max_speed_hz.
Signed-off-by: Axel Lin <axel.lin@ingics.com >
Signed-off-by: Mark Brown <broonie@linaro.org >
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052eb2d490